BX-J portable metallurgical microscopes has vertical illumination light source. Applicable to metallographic inspection of various work pieces which is large or unable to make sample. No need to cut sampling and can directly grinding and polishing, in order to ensure the integrity of the work piece.  This machine can identify different metal and alloy organization structure. Widely used in Casting quality appraisal, raw material inspection or  organization analysis after handling the materials by factory, laboratory